The final season itself won’t begin until January of 2017, but in the meantime, so reads the first synopsis:

The 10-episode fourth season of the stand-out high seas drama returns in 2017, and finds our pirates at war in the West Indies. The shores of New Providence Island have never been bloodier, but the closer civilization comes to defeat, the more desperately, and destructively, it will fight back.

Said co-creator Jonathan E. Steinberg of the ending, which will “bring the epic pirate drama right to the shores of Treasure Island”:

It’s a rare privilege in television to be given the kind of creative freedom we’ve enjoyed on this show over the last four years. While it was a difficult decision for us to make this season our last, we simply couldn’t imagine anything beyond it that would make for a better ending to the story nor a more natural handoff to Treasure Island. We’d like to thank Chris, Carmi and everyone at Starz for all their faith and support, and to our astounding cast and crew for joining us on this ride.

The final season lacks an official premiere date, but stay tuned for more of Black Sails Season 4.